Every key of ~/.config/wr/config.toml, with its default. Anything missing uses its default, a broken file falls back to the defaults with a notice, and most of this can be changed live from Settings.

Key	Default	Values	Meaning
`width`	`100`	`0` or 40–400	max width of the reading column; `0` = full width
`center`	`true`	bool	center the column in the terminal
`spacing`	`1`	`0` `1` `2`	blank lines between blocks: compact, normal, airy
`heading_rules`	`true`	bool	a rule under level 1 and 2 headings
`code_frame`	`true`	bool	the label and frame around code blocks
`guess_code_lang`	`true`	bool	infer the language of unlabeled code when wr is sure (shown as `(guessed)`)
`links`	`"footnotes"`	`footnotes` `inline` `hidden`	how link addresses are shown
`braille`	`true`	bool	braille decoration (marks, bars, spinner)
`accent`	`"blue"`	8 ANSI colors + 6 presets	the color of the UI chrome
`scrollbar`	`true`	bool	the scrollbar on the right
`footer`	`true`	bool	the footer row
`footer_rule`	`true`	bool	the thin rule above the footer
`footer_hints`	`true`	bool	the shortcut hints on the left of the footer
`footer_progress`	`"both"`	`both` `percent` `bar` `off`	what the footer shows on the right
`footer_chips`	`true`	bool	the small notes: bookmark star, update available, search count
`mouse`	`true`	bool	wheel scrolling, clicking links, drag to select
`copy_on_select`	`true`	bool	copy as soon as the mouse is released
`wheel_lines`	`3`	1–20	lines per wheel notch
`animations`	`true`	bool	master switch for every animation
`anim_scroll`	`true`	bool	smooth (spring) scrolling
`anim_reveal`	`true`	bool	the page wiping in when it loads
`anim_panels`	`true`	bool	panels opening like a shutter
`anim_loading`	`true`	bool	the braille wave while a page downloads
`anim_notices`	`true`	bool	notices typing themselves out
`scroll_speed`	`"normal"`	`slow` `normal` `fast`	how quickly scrolling catches up
`search_engine`	`"duckduckgo"`	`duckduckgo` `wikipedia` `github`, or a URL with `%s`	where plain words go
`homepage`	`""`	an address or a file	what `wr` opens with no address; `""` = the start page
`render_js`	`true`	bool	render pages drawn by JavaScript with an installed Chromium/Chrome
`update_check`	`true`	bool	look for a newer wr in the background (at most every 12 hours)
`whats_new`	`false`	bool	show the release notes in a small window when there is an update, and after you update
`history`	`true`	bool	remember the pages you visit
`history_limit`	`1000`	50–20000	how many visits to keep
`background_refresh`	`true`	bool	refresh a cached page while you read it, and tell you if it changed
`cache`	`true`	bool	keep pages on disk
`cache_days`	`30`	1–3650	days before a cached page is forgotten
`[keys]`	—	`action = ["key", …]`	only the bindings that differ from the defaults

The eight ANSI accent colors (blue, cyan, green, magenta, yellow, red, gray, white) are your terminal’s own colors, so they follow its theme. The six presets (orange, violet, teal, pink, lime, slate) are fixed 256-colors that look the same everywhere — pick one when your theme lacks the color you want.